A New Rotor Position Measurement Method for Permanent Magnet Spherical Motors

This paper proposes a new high-precision rotor position measurement (RPM) method for permanent magnet spherical motors (PMSMs). In the proposed method, a LED light spot generation module (LSGM) was installed at the top of the rotor shaft. In the LSGM, three LEDs were arranged in a straight line with...

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Bibliographic Details
Published in:Applied sciences 2018-11, Vol.8 (12), p.2415
Main Authors: Lu, Yin, Hu, Cungang, Wang, Qunjing, Hong, Yi, Shen, Weixiang, Zhou, Chengquan
Format: Article
Language:English
Subjects:
Acceleration
Angular velocity
Attitude (inclination)
Calibration
Cameras
Design optimization
Electric potential
Engineering
Errors
Hall effect
High speed cameras
image processing
Interfaces
Magnetic fields
Magnetism
Measurement methods
Methods
Microelectromechanical systems
optical feature point
permanent magnet spherical motor
Permanent magnets
Photoelectricity
Position measurement
Position sensing
Product design
rotor position measurement
Sensors
Velocity
Vision systems
Voltage
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Summary:This paper proposes a new high-precision rotor position measurement (RPM) method for permanent magnet spherical motors (PMSMs). In the proposed method, a LED light spot generation module (LSGM) was installed at the top of the rotor shaft. In the LSGM, three LEDs were arranged in a straight line with different distances between them, which were formed as three optical feature points (OFPs). The images of the three OFPs acquired by a high-speed camera were used to calculate the rotor position of PMSMs in the world coordinate frame. An experimental platform was built to verify the effectiveness of the proposed RPM method.
ISSN:2076-3417
2076-3417
DOI:10.3390/app8122415